DevHelp QueueFlush: Difference between revisions
Created page with "This service clears the character queue structure that is specified; that is, it empties the buffer. ==Syntax== ===C=== USHORT APIENTRY DevHelp_QueueFlush (NPBYTE Queue) =..." |
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This service clears the character queue structure that is specified; that is, it empties the buffer. | {{DISPLAYTITLE:DevHelp_QueueFlush}} | ||
This service clears the character queue structure that is specified; that is, it empties the buffer. | |||
==Syntax== | ==Syntax== | ||
;C | |||
USHORT APIENTRY DevHelp_QueueFlush (NPBYTE Queue) | USHORT APIENTRY DevHelp_QueueFlush (NPBYTE Queue) | ||
;Assembler | |||
<PRE> | <PRE> | ||
MOV BX,OFFSET DS:queue ; Points to the queue structure to be flushed. | MOV BX,OFFSET DS:queue ; Points to the queue structure to be flushed. | ||
| Line 13: | Line 14: | ||
CALL [Device_Help] | CALL [Device_Help] | ||
</PRE> | </PRE> | ||
==Parameters== | ==Parameters== | ||
===C=== | ===C=== | ||
; Queue (NPBYTE) : input - Near pointer to the queue structure to be flushed. (The Qsize field must be set up.) | ;Queue (NPBYTE) : input - Near pointer to the queue structure to be flushed. (The Qsize field must be set up.) | ||
===Assembler=== | ===Assembler=== | ||
MOV BX,OFFSET DS:queue ; Points to the queue structure to be flushed. | |||
MOV BX,OFFSET DS:queue | ; (The Qsize field must be set up.) | ||
==Return Code== | ==Return Code== | ||
None. | |||
None . | |||
==Remarks== | ==Remarks== | ||
This function operates on the simple character queue structure initialized by QueueInit. | This function operates on the simple character queue structure initialized by QueueInit. | ||
==Example Code== | ==Example Code== | ||
;C | |||
<PRE> | <PRE> | ||
#include "dhcalls.h" | #include "dhcalls.h" | ||
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USHORT APIENTRY DevHelp_QueueFlush (NPBYTE Queue) | USHORT APIENTRY DevHelp_QueueFlush (NPBYTE Queue) | ||
</PRE> | </PRE> | ||
[[Category:DevHlps]] | [[Category:DevHlps]] | ||
Latest revision as of 05:33, 11 May 2025
This service clears the character queue structure that is specified; that is, it empties the buffer.
Syntax
- C
USHORT APIENTRY DevHelp_QueueFlush (NPBYTE Queue)
- Assembler
MOV BX,OFFSET DS:queue ; Points to the queue structure to be flushed.
; (The Qsize field must be set up.)
MOV DL,DevHlp_QueueFlush
CALL [Device_Help]
Parameters
C
- Queue (NPBYTE)
- input - Near pointer to the queue structure to be flushed. (The Qsize field must be set up.)
Assembler
MOV BX,OFFSET DS:queue ; Points to the queue structure to be flushed.
; (The Qsize field must be set up.)
Return Code
None.
Remarks
This function operates on the simple character queue structure initialized by QueueInit.
Example Code
- C
#include "dhcalls.h" USHORT APIENTRY DevHelp_QueueFlush (NPBYTE Queue)